emontx - voltage and sleep

Submitted by Lloyd on Sun, 22/04/2012 - 11:32

Am I correct in thinking that I can't use the sleep function to increase battery life on my emontx if I'm measuring voltage?

Thanks

Lloyd

Re: emontx - voltage and sleep

Submitted by glyn.hudson on Sun, 22/04/2012 - 20:54.

I can't think of any reason why sleep could not be used. We use delay in the example since we assume if someone is monitoring voltage with an AC-AC adapter they will also power the emonTx with a USB power supply. When using a USB power supply using delay instead of sleep give a more constant current draw which puts less stress on the SMPS.

Re: emontx - voltage and sleep

Submitted by Lloyd on Mon, 23/04/2012 - 12:15.

Ok - It's just that it is commented out in the example sketch:

		void emontx_sleep(int seconds) {

		  // if (emontx.battery > 3300) { 

		    for (int i=0; i<seconds; i++) {

		      delay(1000);

		      if (UNO) wdt_reset();

		    }

		  // } else Sleepy::loseSomeTime(seconds*1000);

		}

	Does the watchdog timer also need to go in the else clause (ie outside of the conditional code) ?

	Lloyd

Re: emontx - voltage and sleep

Submitted by glyn.hudson on Sun, 29/04/2012 - 16:25.

No I don't think it does. It works ok in the current only example: https://github.com/openenergymonitor/emonTxFirmware/blob/master/emonTx_CT123/emontx_lib.ino

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